MinnieTewksbury497
MinnieTewksbury497 MinnieTewksbury497
  • 04-06-2015
  • Mathematics
contestada

3x + y = 19 , and x + 3y = 1. Find the value of 2x + 2y
a. 20
b. 18
c. 11
d. 10
e. 5

Respuesta :

naǫ
naǫ naǫ
  • 04-06-2015
[tex]3x+y=19 \\ x+3y=1 \\ \\ \hbox{add the sides of the equations:} \\ 3x+x+y+3y=19+1 \\ 4x+4y=20 \\ \\ \hbox{divide both sides by 2:} \\ 2x+2y=10[/tex]

The answer is d. 10.
Answer Link

Otras preguntas

commutative property of 35x70=mx35
In his comedies, Shakespeare is well known for A. fatally flawed characters. B. revealing great heroes as common fools. C. an unusual use of Middle English.
which of the following traits is acquired? a. the number of petals that grow in a plant's flower b. the wing shape of a wild bird c. the ability of some
a.) write an equation in slope intercept form for the total cost of any number of tickets at 7 tickets for $5. b.) Write an equation in slope-intercept form for
martian periodic table
A student completing research for a project enters the following search terms: Drugs AND prescription AND cost Which of the following best describes the likely
How do you simplify 18/35
write 4/9 5/9 ratio in simplest form
24% of 289= estimate using a rate per 100 to get answer
How does a tornado form?